Difficulty: Easy
Correct Answer: electrical, mechanical, light, heat, magnetic, and chemical
Explanation:
Introduction / Context:
Energy classification provides a conceptual map for understanding how systems convert and utilize energy. In entry-level electrical and mechanical engineering, a common enumeration includes electrical, mechanical, radiant (light), thermal (heat), magnetic, and chemical energy.
Given Data / Assumptions:
Concept / Approach:
Systems convert energy among forms: batteries convert chemical to electrical; motors convert electrical to mechanical; heaters convert electrical to thermal; lamps/LEDs convert electrical to light; inductors and transformers store/transmit energy magnetically. These categories align with the listed six in the correct option.
Step-by-Step Solution:
Identify forms: electrical, mechanical, light (radiant), heat (thermal), magnetic, chemical.Relate to devices: battery (chemical→electrical), motor (electrical→mechanical), resistor (electrical→heat), lamp/LED (electrical→light), inductor/transformer (electromagnetic/magnetic energy).Conclude the option that matches these categories.
Verification / Alternative check:
Introductory physics and engineering texts consistently treat these as standard categories in practical engineering examples.
Why Other Options Are Wrong:
Options with “sun” misuse a source instead of a form.
“Potential” is a subset of mechanical energy (gravitational/elastic), not a separate everyday category here.
Other lists mix sources and specialized forms (e.g., tidal/wind) rather than the general forms taught alongside electric circuits.
Common Pitfalls:
Confusing sources (solar) with forms (radiant/light) and mixing system-level phenomena with energy categories.
Final Answer:
electrical, mechanical, light, heat, magnetic, and chemical
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